To facilitate access to the Port for those coming from the north side of the city, Pope Clement XIII had a monumental entrance opened in the walls that enclosed the Port, called Porta Livono. The construction demonstrates how over the centuries the various Popes have been interested in the development and fortification of the local port, which due to its excellent position has always been one of the most active and important maritime ports in the Tyrrhenian Sea.

The remains of the mighty defensive walls bear witness to the ancient splendor of the city. The works linked to port activity and the defense of trade and the population remained alive and standing until the last world conflict, during which the port and the city were almost completely destroyed by the numerous bombings suffered. Porta Livono had the same disastrous fate. Recently, the Municipal Administration and the established Port Authority have retuned Porta Livono to its ancient architectural splendor.